5. No matter how far you stand from a mirror, your image appears erect. The mirror
is likely to be
ja) only plane.
only concave.
(c) only convex.
(d) either plane or convex.
6. Which of the following lenses would you prefer to use while reading small letters
found in a dictionary?
A convex lens of focal length 50 cm.
(b) A concave lens of focal length 50 cm.
(c) A convex lens of focal length 5 cm.
Id) A concave lens of focal length 5 cm.
7. We wish to obtain an erect image of an object, using a concave mirror of focal
length 15 cm. What should be the range of distance of the object from the mirror?
What is the nature of the image? Is the image larger or smaller than the object?
Draw a ray diagram to show the image formation in this case.
8. Name the type of mirror used in the following situations.
la) Headlights of a car.
(b) Side/rear-view mirror of a vehicle.
le) Solar furnace.
Support your answer with reason.
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Answer:
Q-
5- option number (d) either plan or convex
6-option number (c) A convex lence of focal length 5 cm
7- The rang of the image is less than 15 cm. The nature of the image is formed when object is placed between pole and focus of concave mirror is virtual,erect and enlargement. The image formation given above in the picture
8-option number (a) Headlights of a car
Explanation:
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